Armchair



FIG. 1 is a front elevational view of an armchair showing our new design;

FIG. 2 is a side elevational view thereof from the left of FIG. 1, the side view opposite that shown in FIG. 1 being the mirror image thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for an armchair, as shown and described. 